Install Android 6.0 Marshmallow on Sprint LG Optimus G LS970 via Custom ROM [Nitrogen OS]


Sprint LG Optimus G LS970 is just another LG device after LG G4 and LG G3 to receive the Android 6.0 Marshmallow via custom ROM. In this guide we are going to use the Nitrogen OS custom ROM based on Android 6.0 Marshmallow, custom ROM is the best choice right a this time when the stock Marshmallow update is in the waiting list. These custom ROMs let you provide the glimpse of Google’s latest OS on your device. We have posted below whole instructions from start to end to update your Sprint LG Optimus G LS970 on Android 6.0 Marshmallow, just go ahead and follow the steps in sequence as mentioned.

Note: The Android 6.0 Marshmallow custom ROM for Sprint LG Optimus G LS970 is currently in the testing stages and you may experience some bugs but most of the features are seems to be working fine so just go ahead and install the latest Marshmallow Android 6.0 on your Sprint LG Optimus G LS970.

How to install Android 6.0 Marshmallow Nitrogen OS Custom ROM on Sprint LG Optimus G LS970

Before you Begin:

Disclaimer: This tutorial includes multiple operations including Custom Rom, custom recovery etc. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.


  • Please ensure your phone battery should be charged at minimum 80%
  • Download LG USB drivers
  • Your device should have a working TWRP or CWM recovery installed in your device.

Necessary downloads:

Process to install Android 6.0 Marshmallow on Sprint LG Optimus G LS970

Connect your device to your PC and copy the both ROM and google apps zip files onto your device storage.

Turn of your device and boot into TWRP custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into TWRP recovery, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.

Once the Nandroid process completes, tap on “Wipe” and then swipe the slider from left to right to begin the wipe process (This will reset your device to factory)

Now it’s the time to flash the Marshmallow firmware on your device. Choose install and navigate to the folder in which you have copied the Nitrogen ROM zip file

Swipe across the slider to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of gapps.

Wait for the installation process to complete.

Once completed Reboot your device.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue

That’s it! Android 6.0 Marshmallow is successfully installed on your Sprint LG Optimus G LS970. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.
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